Angles in Plane Shapes: Right, Obtuse, Acute, or Straight

This triangle has one right side.

• left triangle

• right triangle

• scalene triangle

• acute triangle

An______has one angle that is MORE than 90 degrees, or obtuse.

• Obtuse triangle

• Right Triangle

• Left Triangle

• Acute Triangle

An_______has three acute, less than 90 degree, angles.

• Left Triangle

• Right Triangle

• Polygons

• Acute Triangle

A_______is a parallelogram with four right angles.

• circle

• triangle

• rectangle

• scalene triangle

an angle whose measure is greater than 90⁰ but less than 180⁰

• obtuse angle

• acute angle

• reflex angle

• right angle

an angle that measures exactly 90⁰

• right angle

• obtuse angle

• acute angle

• reflex angle

an angle whose measure is greater than 0⁰ but less than 90⁰

• acute angle

• obtuse angle

• right angle

• reflex angle

a parallelogram with four right angles

• rectangle

• triangle

• trapezoid

• hexagon

This is what kind of angle?

• obtuse

• right

• straight

• acute

• x = 118

• x = 108

• x = 28

• x = 58

• x = 62